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37187df45a
- Don't WARN_ON weird states that unprivileged users can create.
- Don't invalidate page cache when direct writes want to fall back to
buffered.
- Fix some problems when readahead ios fail.
- Fix a problem where inline data pages weren't getting flushed during
an unshare operation.
- Rework iomap to support arbitrarily many blocks per page in
preparation to support THP for the page cache.
- Fix a bug in the blocksize < pagesize buffered io path where we could
fail to initialize the many-blocks-per-page uptodate bitmap correctly
when the backing page is actually up to date. This could cause us to
forget to write out dirty pages.
- Split out the generic_write_sync at the end of the directio write path
so that btrfs can drop the inode lock before sync'ing the file.
- Call inode_dio_end before trying to sync the file after a O_DSYNC
direct write (instead of afterwards) to match the behavior of the
old directio code.
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Merge tag 'iomap-5.10-merge-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull iomap updates from Darrick Wong:
"There's not a lot of new stuff going on here -- a little bit of code
refactoring to make iomap workable with btrfs' fsync locking model,
cleanups in preparation for adding THP support for filesystems, and
fixing a data corruption issue for blocksize < pagesize filesystems.
Summary:
- Don't WARN_ON weird states that unprivileged users can create.
- Don't invalidate page cache when direct writes want to fall back to
buffered.
- Fix some problems when readahead ios fail.
- Fix a problem where inline data pages weren't getting flushed
during an unshare operation.
- Rework iomap to support arbitrarily many blocks per page in
preparation to support THP for the page cache.
- Fix a bug in the blocksize < pagesize buffered io path where we
could fail to initialize the many-blocks-per-page uptodate bitmap
correctly when the backing page is actually up to date. This could
cause us to forget to write out dirty pages.
- Split out the generic_write_sync at the end of the directio write
path so that btrfs can drop the inode lock before sync'ing the
file.
- Call inode_dio_end before trying to sync the file after a O_DSYNC
direct write (instead of afterwards) to match the behavior of the
old directio code"
* tag 'iomap-5.10-merge-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
iomap: Call inode_dio_end() before generic_write_sync()
iomap: Allow filesystem to call iomap_dio_complete without i_rwsem
iomap: Set all uptodate bits for an Uptodate page
iomap: Change calling convention for zeroing
iomap: Convert iomap_write_end types
iomap: Convert write_count to write_bytes_pending
iomap: Convert read_count to read_bytes_pending
iomap: Support arbitrarily many blocks per page
iomap: Use bitmap ops to set uptodate bits
iomap: Use kzalloc to allocate iomap_page
fs: Introduce i_blocks_per_page
iomap: Fix misplaced page flushing
iomap: Use round_down/round_up macros in __iomap_write_begin
iomap: Mark read blocks uptodate in write_begin
iomap: Clear page error before beginning a write
iomap: Fix direct I/O write consistency check
iomap: fix WARN_ON_ONCE() from unprivileged users
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.